Trust, but verify. Ronald Reagan said it in 1987 to characterize US-Soviet relations, and the Pentagon is saying it in 2007 to characterize its relationship with foreign-made microchips. Given the past yearâ''s adventures in dog food, toys and toothpaste, itâ''s hard to fault them for their caution. A year shy of its 50th birthday, the Defense Advanced Research Projects Agency has launched the Trust in Integrated Circuits program, the goal of which is a microchip verification process. Itâ''s basically a Pentagon Good Housekeeping Seal of Approval. A chip bearing the Trusted imprimatur will be guaranteed free of malicious …